dajac commented on code in PR #15430:
URL: https://github.com/apache/kafka/pull/15430#discussion_r1504265561
##########
group-coordinator/src/main/java/org/apache/kafka/coordinator/group/runtime/EventAccumulator.java:
##########
@@ -137,31 +136,43 @@ public void add(T event) throws
RejectedExecutionException {
}
/**
- * Returns the next {{@link Event}} available. This method block
indefinitely until
- * one event is ready or the accumulator is closed.
+ * Returns the next {{@link Event}} available or null if no event is
+ * available.
*
- * @return The next event.
+ * @return The next event available or null.
*/
public T poll() {
- return poll(Long.MAX_VALUE, TimeUnit.SECONDS);
+ lock.lock();
+ try {
+ K key = randomKey();
+ if (key == null) return null;
+
+ Queue<T> queue = queues.get(key);
+ T event = queue.poll();
+
+ if (queue.isEmpty()) queues.remove(key);
+ inflightKeys.add(key);
+ size--;
+
+ return event;
+ } finally {
+ lock.unlock();
+ }
}
/**
- * Returns the next {{@link Event}} available. This method blocks for the
provided
- * time and returns null of not event is available.
+ * Returns the next {{@link Event}} available. This method blocks until an
+ * event is available or the thread is interrupted.
*
- * @param timeout The timeout.
- * @param unit The timeout unit.
* @return The next event available or null.
*/
- public T poll(long timeout, TimeUnit unit) {
+ public T take() {
lock.lock();
try {
K key = randomKey();
- long nanos = unit.toNanos(timeout);
- while (key == null && !closed && nanos > 0) {
+ while (key == null && !closed) {
try {
- nanos = condition.awaitNanos(nanos);
Review Comment:
Yeah, I don't know if it really makes a difference in the end. However, it
seems better to improve the code as we only use 0 or max.
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